FR2335795A2 - ELECTRICAL CIRCUIT OF A FLAME MONITOR OF A HEATING SYSTEM - Google Patents

ELECTRICAL CIRCUIT OF A FLAME MONITOR OF A HEATING SYSTEM

Info

Publication number
FR2335795A2
FR2335795A2 FR7638416A FR7638416A FR2335795A2 FR 2335795 A2 FR2335795 A2 FR 2335795A2 FR 7638416 A FR7638416 A FR 7638416A FR 7638416 A FR7638416 A FR 7638416A FR 2335795 A2 FR2335795 A2 FR 2335795A2
Authority
FR
France
Prior art keywords
zener diode
rectifier
heating system
electrical circuit
flame monitor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
FR7638416A
Other languages
French (fr)
Other versions
FR2335795B2 (en
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Danfoss AS
Original Assignee
Danfoss AS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Danfoss AS filed Critical Danfoss AS
Publication of FR2335795A2 publication Critical patent/FR2335795A2/en
Application granted granted Critical
Publication of FR2335795B2 publication Critical patent/FR2335795B2/fr
Granted legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N5/00—Systems for controlling combustion
    • F23N5/20—Systems for controlling combustion with a time programme acting through electrical means, e.g. using time-delay relays
    • F23N5/203—Systems for controlling combustion with a time programme acting through electrical means, e.g. using time-delay relays using electronic means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N5/00—Systems for controlling combustion
    • F23N5/02—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium
    • F23N5/08—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using light-sensitive elements
    • F23N5/082—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using light-sensitive elements using electronic means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2229/00—Flame sensors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N5/00—Systems for controlling combustion
    • F23N5/02—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium
    • F23N5/08—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using light-sensitive elements

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Regulation And Control Of Combustion (AREA)
  • Control Of Combustion (AREA)
  • Fire-Detection Mechanisms (AREA)

Abstract

The flame guard (FW) circuit is to provide greater independence from mains voltage fluctuations. A photoresistor (LD) is part of a voltage divider which controls an amplifier (Tr1, Tr2) for a photo relay (F), there being provided a switch (P1, P2) by means of which the operating sensitivity can be changed. The alternating voltage is applied via a series impedance (C1, R2) to a first Zener diode (Z1). A first series circuit of a first rectifier (D1) and of a second charging capacitor (C2) is connected in parallel with the first Zener diode (Z1). A second series circuit with a second Zener diode (Z2), a second rectifier (D2) and a first charging capacitor (C3) is also connected in parallel with the first Zener diode (Z1). The two Zener diodes have opposite conducting directions. An additional connection (11) is connected via a series impedance (R9) between the second Zener diode (Z2) and the second rectifier (D2).
FR7638416A 1975-12-20 1976-12-20 ELECTRICAL CIRCUIT OF A FLAME MONITOR OF A HEATING SYSTEM Granted FR2335795A2 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2557690A DE2557690C3 (en) 1975-12-20 1975-12-20 Circuit fed with mains alternating voltage for a flame monitor in a combustion system

Publications (2)

Publication Number Publication Date
FR2335795A2 true FR2335795A2 (en) 1977-07-15
FR2335795B2 FR2335795B2 (en) 1982-05-28

Family

ID=5965081

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7638416A Granted FR2335795A2 (en) 1975-12-20 1976-12-20 ELECTRICAL CIRCUIT OF A FLAME MONITOR OF A HEATING SYSTEM

Country Status (6)

Country Link
JP (1) JPS5280526A (en)
CH (1) CH620754A5 (en)
DE (1) DE2557690C3 (en)
DK (1) DK565376A (en)
FR (1) FR2335795A2 (en)
IT (1) IT1090141B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH606915A5 (en) * 1976-10-22 1978-11-15 Landis & Gyr Ag
DE2938786C3 (en) * 1979-09-19 1982-05-06 LGZ Landis & Gyr Zug AG, 6301 Zug Flame safeguards supplied with alternating voltage

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2153724A5 (en) * 1971-09-22 1973-05-04 Cem Comp Electro Mec
FR2169651A5 (en) * 1972-01-26 1973-09-07 Elesta Ag Elektronik
FR2287656A1 (en) * 1974-10-09 1976-05-07 Danfoss As CONTROL AND MONITORING EQUIPMENT OF OIL OR GAS BURNERS
FR2290669A1 (en) * 1974-11-06 1976-06-04 Danfoss As POWER SUPPLY FOR ELECTRONIC CONTROL INSTALLATION

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2153724A5 (en) * 1971-09-22 1973-05-04 Cem Comp Electro Mec
FR2169651A5 (en) * 1972-01-26 1973-09-07 Elesta Ag Elektronik
FR2287656A1 (en) * 1974-10-09 1976-05-07 Danfoss As CONTROL AND MONITORING EQUIPMENT OF OIL OR GAS BURNERS
FR2290669A1 (en) * 1974-11-06 1976-06-04 Danfoss As POWER SUPPLY FOR ELECTRONIC CONTROL INSTALLATION

Also Published As

Publication number Publication date
CH620754A5 (en) 1980-12-15
JPS5280526A (en) 1977-07-06
DE2557690A1 (en) 1977-06-30
FR2335795B2 (en) 1982-05-28
DK565376A (en) 1977-06-21
JPS5756650B2 (en) 1982-12-01
IT1090141B (en) 1985-06-18
DE2557690B2 (en) 1980-01-03
DE2557690C3 (en) 1980-09-04

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